Birth Name: Jeffrey Horn, Jr.
Place of Birth: Brisbane, Queensland, Australia
Date of Birth: 4 February 1988
Ethnicity: Frisian (Dutch), Irish, possibly other
Jeff Horn is an Australian professional boxer.
He is the son of Leasa “Liza” Dykstra and Jeffrey “Jeff” Horn, Sr. He is married to Joanna “Jo” Buckley.
Jeff’s maternal grandparents are Jacob “Jack” Dykstra and Marie Ann McCarthy. Jacob is a Dutch immigrant, from Haulerwijk, Ooststellingwerf, Friesland. Marie is Australian, of Irish descent.
Sources: Marriage record of Jeff’s maternal grandparents, Jacob Dykstra and Marie Ann McCarthy – https://recordsearch.naa.gov.au
Immigration record of Jeff’s maternal grandfather, Jacob Dykstra – https://recordsearch.naa.gov.au